Vol.21 No.4

Case Report

Pseudogout of the acromioclavicular joint: report of two cases and review of the literature

Authors

Michiyuki Hakozaki1,2 , Shinichi Kikuchi2 , Koji Otani2 , Takahiro Tajino2 , Shinichi Konno2

  • Department of Orthopaedic Surgery, Fukushima Prefectural Minami-Aizu Hospital, 14-1 Kazashita, Nagata, Minami-Aizu-machi Fukushima, 967-0006, Japan
  • Department of Orthopaedic Surgery, Fukushima Medical University School of Medicine, Fukushima, Japan
Received:

13 December 2010

Accepted:

13 January 2011

Published online:

5 February 2011

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Abstract

Although calcium pyrophosphate dehydrate (CPPD) deposition disease, including pseudogout, is a relatively common disease affecting the major joints, especially the knee, pseudogout in the acromioclavicular (AC) joint is very uncommon. We describe two cases of acute pseudogout attacks of the AC joint in elderly patients. Radiological findings showed chondrocalcinosis in the AC joints. Microscopically, aspirated articular synovial fluid demonstrated CPPD crystals. Conservative therapy with non-steroidal anti-inflammatory drugs completely resolved all symptoms within 1 week.

Key words

Acromioclavicular joint - Calcium pyrophosphate dehydrate deposition disease - Crystal-induced arthritis - Non-steroidal anti-inflammatory drugs - Pseudogout